Engineering notes from the VLSC open-source amateur radio projects — remote radio control, SDR signal chains, antenna tuning, and the field work behind them. Written by BG1SB.
From the fruit-fly connectome to RAG, multi-agent systems, embodied AI, and brain–computer interfaces: an evidence-led argument for why connection matters—and why connection alone is not enough.
The FT-710's hidden FT4222 SPI bridge exposes real spectrum data over the USB cable you already own — CAT, waterfall, and audio on one link, no SCU-LAN10 dongle.
One servo, one air variable capacitor, and no on-board SWR bridge. How a 430-CNY tuner reads SWR over WebSocket and covers 40m to 10m.
The >10× bandwidth cut that makes remote radio usable on mobile networks — plus a 20 ms frame cost, an arm64 ctypes bug, and a 1-byte codec tag.
Watch what stations a few hundred kilometers away are decoding, and you'll know exactly when a rare DXCC is workable from your QTH. A real evening session on 15 meters.